using System;
using System.IO;
using System.Xml.Serialization;

namespace PaintDotNet.Base.CommTool
{
    /// <summary>
    /// XML序列化公共处理类
    /// </summary>
    public static class XmlSerializeHelper
    {
        /// <summary>
        /// 将实体对象转换成XML
        /// </summary>
        /// <typeparam name="T">实体类型</typeparam>
        /// <param name="obj">实体对象</param>
        public static string XmlSerialize<T>(T obj)
        {
            try
            {
                using (StringWriter sw = new StringWriter())
                {
                    Type t = obj.GetType();
                    XmlSerializer serializer = new XmlSerializer(obj.GetType());
                    serializer.Serialize(sw, obj);
                    sw.Close();
                    return sw.ToString();
                }
            }
            catch (Exception ex)
            {
                throw new Exception("", ex); // ("将实体对象转换成XML异常", ex); //("", exception); // 
            }
        }

        /// <summary>
        /// 将XML转换成实体对象
        /// </summary>
        /// <typeparam name="T">实体类型</typeparam>
        /// <param name="strXML">XML</param>
        public static T DESerializer<T>(string strXML) where T : class
        {
            try
            {
                using (StringReader sr = new StringReader(strXML))
                {
                    XmlSerializer serializer = new XmlSerializer(typeof(T));
                    return serializer.Deserialize(sr) as T;
                }
            }
            catch (Exception ex)
            {
                throw new Exception("", ex); // ("将XML转换成实体对象异常", ex);
            }
        }

        /// <summary>
        /// 将实体对象转换成XML
        /// </summary>
        /// <typeparam name="T">实体类型</typeparam>
        /// <param name="obj">实体对象</param>
        public static void Save<T>(T obj, string path)
        {
            try
            {
                using (var wirter = new FileStream(path, (FileMode)FileAccess.Write))
                {
                    Type t = obj.GetType();
                    XmlSerializer serializer = new XmlSerializer(obj.GetType());
                    serializer.Serialize(wirter, obj);
                    wirter.Close();
                }
            }
            catch (Exception ex)
            {
                throw new Exception("", ex); 
            }
        }

        /// <summary>
        /// 将XML转换成实体对象
        /// </summary>
        /// <typeparam name="T">实体类型</typeparam>
        /// <param name="strXML">XML</param>
        public static T Load<T>(string path) where T : class
        {
            try
            {
                using (var reader = new FileStream(path, FileMode.Open))
                {
                    XmlSerializer xml = new XmlSerializer(typeof(T));
                    var obj = xml.Deserialize(reader);
                    reader.Close();
                    return obj as T;
                }
            }
            catch (Exception ex)
            {
                throw new Exception("", ex); 
            }
        }
    }
}